Unsteady MHD Couette-Hartmann ow through a porous medium bounded by porous plates with Hall current, ion-slip and Coriolis e ects

E ects of Hall current, ion-slip and Coriolis force on unsteady MHD Couette-Hartmann ow of a viscous incompressible electrically conducting uid through a porous medium bounded by porous plates in the presence of a uniform transverse magnetic eld which is either xed relative to the uid or to the moving porous plate is investigated using Laplace transform technique. The expressions for the uid velocity and shear stress at the moving porous plate are also derived. In order to analyze the physical signi cance and characteristic features of the problem, the graphs for velocity distribution and shear stress distribution at the moving porous plate are generated for di erent values of non- dimensional parameters. It is observed that the uid velocity when magnetic eld is xed relative to the moving porous plate is always more than the uid velocity when magnetic eld is xed relative to the uid while the shear stress at the moving porous plate when magnetic eld is xed relative to the moving porous plate is always less than the shear stress at the moving porous plate when magnetic eld is xed relative to the uid.